diff options
Diffstat (limited to 'tools/testing/selftests/timers/rtctest.c')
-rw-r--r-- | tools/testing/selftests/timers/rtctest.c | 83 |
1 files changed, 4 insertions, 79 deletions
diff --git a/tools/testing/selftests/timers/rtctest.c b/tools/testing/selftests/timers/rtctest.c index 411eff625e66..6e17b96551ec 100644 --- a/tools/testing/selftests/timers/rtctest.c +++ b/tools/testing/selftests/timers/rtctest.c @@ -94,10 +94,9 @@ static int compare_dates(struct rtc_time *a, struct rtc_time *b) int main(int argc, char **argv) { int i, fd, retval, irqcount = 0, dangerous = 0; - unsigned long tmp, data; + unsigned long data; struct rtc_time rtc_tm; const char *rtc = default_rtc; - struct timeval start, end, diff; switch (argc) { case 3: @@ -211,7 +210,7 @@ test_READ: if (errno == EINVAL) { fprintf(stderr, "\n...Alarm IRQs not supported.\n"); - goto test_PIE; + goto test_DATE; } perror("RTC_ALM_SET ioctl"); @@ -224,7 +223,7 @@ test_READ: if (errno == EINVAL) { fprintf(stderr, "\n...EINVAL reading current alarm setting.\n"); - goto test_PIE; + goto test_DATE; } perror("RTC_ALM_READ ioctl"); exit(errno); @@ -239,7 +238,7 @@ test_READ: if (errno == EINVAL || errno == EIO) { fprintf(stderr, "\n...Alarm IRQs not supported.\n"); - goto test_PIE; + goto test_DATE; } perror("RTC_AIE_ON ioctl"); @@ -264,80 +263,6 @@ test_READ: exit(errno); } -test_PIE: - /* Read periodic IRQ rate */ - retval = ioctl(fd, RTC_IRQP_READ, &tmp); - if (retval == -1) { - /* not all RTCs support periodic IRQs */ - if (errno == EINVAL) { - fprintf(stderr, "\nNo periodic IRQ support\n"); - goto test_DATE; - } - perror("RTC_IRQP_READ ioctl"); - exit(errno); - } - fprintf(stderr, "\nPeriodic IRQ rate is %ldHz.\n", tmp); - - fprintf(stderr, "Counting 20 interrupts at:"); - fflush(stderr); - - /* The frequencies 128Hz, 256Hz, ... 8192Hz are only allowed for root. */ - for (tmp=2; tmp<=64; tmp*=2) { - - retval = ioctl(fd, RTC_IRQP_SET, tmp); - if (retval == -1) { - /* not all RTCs can change their periodic IRQ rate */ - if (errno == EINVAL) { - fprintf(stderr, - "\n...Periodic IRQ rate is fixed\n"); - goto test_DATE; - } - perror("RTC_IRQP_SET ioctl"); - exit(errno); - } - - fprintf(stderr, "\n%ldHz:\t", tmp); - fflush(stderr); - - /* Enable periodic interrupts */ - retval = ioctl(fd, RTC_PIE_ON, 0); - if (retval == -1) { - perror("RTC_PIE_ON ioctl"); - exit(errno); - } - - for (i=1; i<21; i++) { - gettimeofday(&start, NULL); - /* This blocks */ - retval = read(fd, &data, sizeof(unsigned long)); - if (retval == -1) { - perror("read"); - exit(errno); - } - gettimeofday(&end, NULL); - timersub(&end, &start, &diff); - if (diff.tv_sec > 0 || - diff.tv_usec > ((1000000L / tmp) * 1.10)) { - fprintf(stderr, "\nPIE delta error: %ld.%06ld should be close to 0.%06ld\n", - diff.tv_sec, diff.tv_usec, - (1000000L / tmp)); - fflush(stdout); - exit(-1); - } - - fprintf(stderr, " %d",i); - fflush(stderr); - irqcount++; - } - - /* Disable periodic interrupts */ - retval = ioctl(fd, RTC_PIE_OFF, 0); - if (retval == -1) { - perror("RTC_PIE_OFF ioctl"); - exit(errno); - } - } - test_DATE: if (!dangerous) goto done; |